PHY183-Lecture12 - 1 Physics for Scientists& Engineers 1 Physics for Scientists& Engineers 1 Physics for Scientists& Engineers 1 Physics

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 1 Physics for Scientists & Engineers 1 Physics for Scientists & Engineers 1 Physics for Scientists & Engineers 1 Physics for Scientists & Engineers 1 February 8, 2011 Physics for Scientists&Engineers 1 1 Spring Semester 2011 Lecture 12 Energy, Kinetic Energy, Work 2 Energy, the BIG PICTURE Energy, the BIG PICTURE Energy, the BIG PICTURE Energy, the BIG PICTURE February 8, 2011 Physics for Scientists&Engineers 1 2 3 Energy in our Economy Energy in our Economy Energy in our Economy Energy in our Economy s Energy production s Energy consumption s Energy efficiency s Energy resources s National and global February 8, 2011 Physics for Scientists&Engineers 1 3 energy policy • Needs informed citizens to join discussion 4 Energy from Fossil Fuels Energy from Fossil Fuels Energy from Fossil Fuels Energy from Fossil Fuels s Fossil fuels • Coal • Oil • Natural gas s Basic chemical composition: Hydrocarbons s Burning hydrocarbons February 8, 2011 Physics for Scientists&Engineers 1 4 with oxygen releases energy-> useful for power production on a very large scale s Basis for most of our chemical industry as well s Problems: • Non-renewable resource • Pollution: carbon dioxide emission: acid rain, global warming 5 Solar Power Solar Power Solar Power Solar Power s Radiation from Sun contains tremendous amounts of energy s Guaranteed to be provided for next couple of billion years s No pollution s Use: • Primary: solar cells February 8, 2011 Physics for Scientists&Engineers 1 5 Solar farm in CA http://kjcsolar.com/aerial1.jpg • Secondary: wind, hydro 6 “Renewable” Energy Sources “Renewable” Energy Sources “Renewable” Energy Sources “Renewable” Energy Sources s Wind s Hydroelectric s Geo-thermal s Biomass (plants, animals) February 8, 2011 Physics for Scientists&Engineers 1 6 7 Energy from Nuclear Reactions Energy from Nuclear Reactions Energy from Nuclear Reactions Energy from Nuclear Reactions s Reactions of atomic nuclei can liberate tremendous amounts of energy • Splitting (fission) of heavy nuclei (uranium, plutonium) • Fusing hydrogen into helium s Advantages: • No greenhouse gas emission February 8, 2011 Physics for Scientists&Engineers 1 7 • Practically infinite supply Schematic drawing of ITER Schematic drawing of ITER Schematic drawing of ITER Schematic drawing of ITER s Problems: • Dangerous radioactive waste needs long term storage • Potential for use in weapons of mass destruction 8 Clicker Question Clicker Question Clicker Question Clicker Question s How long will the world’s oil resources last? • A) 10 years • B) 25 years • C) 50 years ) 00 years February 8, 2011 Physics for Scientists&Engineers 1 8 • D) 100 years • E) 300 years (this is a survey question, all answers will be given full credit) 9 Prediction from DOE Prediction from DOE Prediction from DOE Prediction from DOE 50 years 50 years 100 years 100 years February 8, 2011 Physics for Scientists&Engineers 1 9 http://www.eia.doe.gov/ You are here You are here 10...
View Full Document

This note was uploaded on 04/23/2011 for the course PHY 183 taught by Professor Wolf during the Spring '08 term at Michigan State University.

Page1 / 29

PHY183-Lecture12 - 1 Physics for Scientists& Engineers 1 Physics for Scientists& Engineers 1 Physics for Scientists& Engineers 1 Physics

This preview shows document pages 1 - 10. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online